Vyvyan Basterd
Adventurer
How about I play a Human Rogue if that is cool with everyone?
In case you plan to play a ranged Rogue I thought I should chime in with my approach to the Stealth rules and subsequent errata.
I think the original rules were too cheesy by allowing a Sneak Attacks merely by hanging out behind other party members for cover and making Stealth checks.
I think the errata made things too clunky and make it too difficult to gain Sneak Attack.
I allow for a Stealth roll to be made from behind any terrain feature that provides cover. But you can't use the same terrain feature to gain Combat Advantage twice in a row.
Simple approach and it has been working well for my home group.